/*
 * Copyright 1999-2017 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package studio.raptor.sqlparser.dialect.mysql.ast.expr;

import java.util.ArrayList;
import java.util.List;
import studio.raptor.sqlparser.ast.SQLExpr;
import studio.raptor.sqlparser.ast.SQLExprImpl;
import studio.raptor.sqlparser.dialect.mysql.visitor.MySqlASTVisitor;
import studio.raptor.sqlparser.visitor.SQLASTVisitor;

public class MySqlMatchAgainstExpr extends SQLExprImpl implements MySqlExpr {

  private List<SQLExpr> columns = new ArrayList<SQLExpr>();

  private SQLExpr against;

  private SearchModifier searchModifier;

  public List<SQLExpr> getColumns() {
    return columns;
  }

  public void setColumns(List<SQLExpr> columns) {
    this.columns = columns;
  }

  public SQLExpr getAgainst() {
    return against;
  }

  public void setAgainst(SQLExpr against) {
    this.against = against;
  }

  public SearchModifier getSearchModifier() {
    return searchModifier;
  }

  public void setSearchModifier(SearchModifier searchModifier) {
    this.searchModifier = searchModifier;
  }

  @Override
  protected void accept0(SQLASTVisitor visitor) {
    MySqlASTVisitor mysqlVisitor = (MySqlASTVisitor) visitor;
    if (mysqlVisitor.visit(this)) {
      acceptChild(visitor, this.columns);
      acceptChild(visitor, this.against);
    }
    mysqlVisitor.endVisit(this);
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((against == null) ? 0 : against.hashCode());
    result = prime * result + ((columns == null) ? 0 : columns.hashCode());
    result = prime * result + ((searchModifier == null) ? 0 : searchModifier.hashCode());
    return result;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    MySqlMatchAgainstExpr other = (MySqlMatchAgainstExpr) obj;
    if (against == null) {
      if (other.against != null) {
        return false;
      }
    } else if (!against.equals(other.against)) {
      return false;
    }
    if (columns == null) {
      if (other.columns != null) {
        return false;
      }
    } else if (!columns.equals(other.columns)) {
      return false;
    }
    if (searchModifier != other.searchModifier) {
      return false;
    }
    return true;
  }

  public static enum SearchModifier {
    IN_BOOLEAN_MODE("IN BOOLEAN MODE"), //
    IN_NATURAL_LANGUAGE_MODE("IN NATURAL LANGUAGE MODE"), //
    IN_NATURAL_LANGUAGE_MODE_WITH_QUERY_EXPANSION("IN NATURAL LANGUAGE MODE WITH QUERY EXPANSION"),
    WITH_QUERY_EXPANSION("WITH QUERY EXPANSION");

    public final String name;
    public final String name_lcase;

    SearchModifier() {
      this(null);
    }

    SearchModifier(String name) {
      this.name = name;
      this.name_lcase = name.toLowerCase();
    }
  }

}
